Abraham millee



(No Model.)

A. MILLER.

A BELT TIGHTENER. No. 325,558. Patented Sept. 1, 1885.

UNITED STATES PATENT @rrrcn.

ABRAHAM MILLER, OF NEWARK, OHIO, ASSIGNOR TO THE NEWARK h IAOHINE COMPANY, OF SAME PLACE.

BELT-TIGHTENER.

QPECIPICATION forming part of Letters Patent No. 325,558, dated September 1, 1885.

Application filed July 22, 1885.

To aZZ whom it may concern.-

Be it known that I, ABRAHAM MILLER, a citizen of the United States, residing at Newark, in the county of Licking and State of Ohio, have invented certain new and useful Improvements in Belt-Tighteners, of which the following is aspecification, reference being had there into the accompanying drawings.

My invention relates to a belt-tightening device; and the novelty consists in theconstrnction, arrangement, and adaptation of parts, as will be more fully hereinafter set forth, and specifically pointed out in the claims.

I will describe the invention as particularly applicable to the machine known as the Victor Double- Huller Olover- Machine, upon which it is specially designed for use, but it will be understood that it will serve with advantage in other relations and combinations.

In machines of this class, exposed to changes of weather and operating upon material which has been more or less exposed to the weather, and requiring more or less power, according to quality and condition of the material, the belts are liable to contract and expand, and such action is detrimental when a number ofdevicesas carrier, elevator, fan, cleaner, &c. are all operated from a single main belt. I apply my tightening device to the belt through which the power is transmitted to these several devices.

The invention is illustrated in the accompanying drawings, which form a part of this speciiication, and in which Figure 1 is aside elevation of a clover huller and recleaner with my belt-tightener attached. Fig. 2 is a top plan view of a portion, showing the horizontal relation of the parts.

Referring to the drawings, in which similar letters of reference indicate like parts in all the figures, A designates the machine, and a the vertical posts thereof. 13 designates the main belt, G the fairbelt, D the recleaner-belts, and E the large elevator-belt.

To one of the posts a, I secure a bracket, F, carryinga friction or idle pulley, 1, upon its arm 9, and having a lever-arm, g, to which is secured an ordinary spring latch, J This spring-latch engages a rack, 70, formed in a bracket, K, secured to other post a, a pin or (No model.)

bolt, 9 working loosely in a grooved slot, k, in said bracket, as shown. The curvature of the slot k is made to agree with the arc of a circle having the pivot f for a center, and the body of the arm G is curved to allow a considerable movement without interfering with the shaft.

To accommodate the belt-tightening device to the part of the machine without interfering with the different belts and shafts at this point requires nice adjustment and arrangement. The axlez' of the idle-roller I is arranged horizontally; but the frame G at this point must stand sufficiently away from the machine to leave room for the recleaner-belt to work freely between. To this end the arm g of the frame G has an offset at G, which throws the plane of said arm beyond said belt.

Whenever there is danger of slipping and loss of motion, the belt B may be tightened by throwing the arm G in the direction indicated in dotted lines in lii g. 1, aiitl the rack and latch allow a fine adjustment of that movement. This throws the idle-roller I against the belt B to tighten it by deflecting it inward, as shown by said dotted lines.

By the construction and arrangement of parts as described no part of the tightening device extends beyond the working machinery, but the said device is made to conform to the requirements of the existing machine.

Modifications in details of arrangement may be made without departing from the principle or sacrificing the advantages of the invention.

By this device the condition of the belts is always under the direct control of the operator, and may be adjusted to suit the requirements of different qualities and conditions of grain or seed.

One portion or lot of grain or seed may require more power than another portion or lot, owingto dampness or other causes. My invention is important in allowing immediate adjustment to meet such exigencies, in contradistinction to setting the belts at such a tension that it will exert its greatest friction at all times, which wears the bearings of the shaft and interferes with the durability of the belts.

hat I claim as new is'- IOG 1. A belt-tightener consisting of a curved pivoted frame, as G, carrying an idle-pulley, and having a spring-latch on its lever-arm, combined with a rack arranged upon the arc of a circle having the frame-pivot for a center, as set forth.

2. The e0mbinati0n,witl1 the pivot-bracket F f and rack-bracket K k, having a slot, is, arranged upon the are of a circle having the pivot f for a center, of the curved frame G, having armsg g and pin or bolt 9', and the idle-roller I, hung on the axle 1, supported on the arm 9, as specified.

3. The eombination,witl1 the belts B D, the bracket K, having rack 7c, the latch J, pivot :5 f, and roller I, of the frame G, having ofi'set G, arms 9 g, and curve 9 all arranged and serving as and for the purpose set forth.

In testimony whereof I affix my signature in presence of two witnesses.

ABRAHAM MILLER.

\Vitnesses:

Trros. F. LENNOX, H. XV. Boo'rrr. 

